On June 9, 2018 during the "Hello! Project Kenshuusei Happyoukai 2018 6gatsu ~Niji~" event in Tokyo, it was announced that Maeda would join one of two upcoming groups, featuring previously announced members Takase Kurumi and Kiyono Momohime, along with Yamazaki Yuhane and Okamura Minami. The group would be unveiled at a later date in 2018.